“I had a relative that would buy the warranty on everything. If the cashier asked, she said YES! In the long run, she could have bought or fixed whatever it was if she stuck the money in a savings account and made money,”
Do-it-yourself home repairs, if you’re not used to them, then it’s going to take twice as long and cost twice as much as just having a professional do it
Cheap new cars. The build quality on these cars sucks. You’re going to have guaranteed problems, which adds to your sunk cost